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// Copyright 2023 The Libc Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build !(linux && arm64)
package libc // import "modernc.org/libc"
import (
"fmt"
"unsafe"
)
// Byte loads are atomic on this CPU.
func a_load_8(addr uintptr) uint32 {
return uint32(*(*byte)(unsafe.Pointer(addr)))
}
// int16 loads are atomic on this CPU when properly aligned.
func a_load_16(addr uintptr) uint32 {
if addr&1 != 0 {
panic(fmt.Errorf("unaligned atomic 16 bit access at %#0x", addr))
}
return uint32(*(*uint16)(unsafe.Pointer(addr)))
}
// Byte sores are atomic on this CPU.
func a_store_8(addr uintptr, b byte) {
*(*byte)(unsafe.Pointer(addr)) = b
}
// int16 stores are atomic on this CPU when properly aligned.
func a_store_16(addr uintptr, n uint16) {
if addr&1 != 0 {
panic(fmt.Errorf("unaligned atomic 16 bit access at %#0x", addr))
}
*(*uint16)(unsafe.Pointer(addr)) = n
}
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